I am just curious what one of the games foremost authorities has to say about CTE and all aiming systems. I'm sure if he bought into it, you'd be quoting him everywhere. I don't use fractional aiming except for an occasional 1/2 ball hit. I love seeing that relationship proven by "Poolology". Not sure what I use. I just try to send the whole cue ball to the OB. I may be too old to even see edges. But, if there is something magical out there, I want it. Right now, my last look is at the OB, and I'd love to have the latitude to last look at the CB to insure I'm hitting it like I want. After all, who doesn't want to never miss again? Making balls into blind pockets with a curtain up would be nice too.
I think most all good shooters look at cue ball last. Why not, if you don't hit the cueball correctly nothing else matters and it's the easiest visual in the game. That said, everybody misses, so forget that goal. Seeing edges, lines, contact points is the hard part regardless of the system used. The object is to learn what the visuals should look like, and that can be done on paper. At the table, if you can see a good visual on a certain shot then you can trust it and shoot it. If you can't see it, don't just assume it's there somewhere and shoot anyway, try a way you have more faith in. I use Pro one on most shots, but after over 2 years there are shots I have trouble seeing, so I either start over and try to get a better visual with more focus, or try a contact point or ghost ball visual. There is no magical solution that makes every ball without accurate use on your part. I'm not to the point of 100% accuracy with any system and most aren't. Missing is part of the process, and so a strategy of knowing how to miss is sometimes the best choice.
With fractional and contact point type systems you have to determine a certain part of an object ball at some distance away, and then aim at that point from some distance away. That is not easy even if you can see that point precisely, much less hit it precisely. The thing with Pro One is you never have to worry about a contact point, although if you know about where it is it can be a visual check to reassure you are using the correct perception for the shot. I can visualize a CTE line and say a Edge to A line as easily as I can 1/4 or 3/8" of a ball. The thing is when using the lines, I don't have to aim down either one of them, just use them to position my visual perception of the shot, approach the cueball, either to center or whatever english I wish, and fire the shot. The target is hitting the cueball correctly, and without aiming at anything else, So yes, cueball definitely last, and without guessing at a fraction of a sphere 5 or 7 feet away.